\documentclass{article}
\usepackage{amssymb,amsmath,amscd,concmath}
\pagestyle{empty}
\begin{document}
\begin{equation*}
x_{1,2}=\frac{\-flava\pm\sqrt{flava^2-{4(oh)(yeah)}}}{{2(oh)}}\end{equation*}
\end{document}
